linux-kernel - Re: [PATCH] net: fix wrong network header length

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Message-ID: <CANP3RGeCRz5Ea6tbX4qGnYNzP_sq0K3mGKdpzP0OrcL=C6ejgQ@mail.gmail.com>
Date:   Thu, 10 Feb 2022 10:06:28 -0800
From:   Maciej Żenczykowski <maze@...gle.com>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     "lina.wang" <lina.wang@...iatek.com>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Linux NetDev <netdev@...r.kernel.org>,
        Kernel hackers <linux-kernel@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Willem Bruijn <willemb@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>, zhuoliang@...iatek.com,
        chao.song@...iatek.com
Subject: Re: [PATCH] net: fix wrong network header length

> I'm wondering why don't you simply enable UDP_GRO on the relevant
> socket?

Oh this is simple.
We don't control the socket.  Apps do.  ie. the entirety of the rest
of the internet.